Merge mysql_cab_desk.:C:/source/c++/mysql-5.0-rpl

into  mysql_cab_desk.:C:/source/c++/mysql-5.0_BUG_20141

mysql-test/r/rpl_user_variables.result

@@ -108,4 +108,180 @@ slave-bin.000001	#	User var	2	#	@`a`=NULL
 slave-bin.000001	#	Query	1	#	use `test`; insert into t1 values (@a),(@a),(@a*5)
 insert into t1 select * FROM (select @var1 union  select @var2) AS t2;
 drop table t1;
+End of 4.1 tests.
+DROP TABLE IF EXISTS t20;
+DROP TABLE IF EXISTS t21;
+DROP PROCEDURE IF EXISTS test.insert;
+CREATE TABLE t20 (a VARCHAR(20));
+CREATE TABLE t21 (a VARCHAR(20));
+CREATE PROCEDURE test.insert()
+BEGIN
+IF (@VAR)
+THEN
+INSERT INTO test.t20 VALUES ('SP_TRUE');
+ELSE
+INSERT INTO test.t20 VALUES ('SP_FALSE');
+END IF;
+END|
+CREATE TRIGGER test.insert_bi BEFORE INSERT
+ON test.t20 FOR EACH ROW
+BEGIN
+IF (@VAR)
+THEN
+INSERT INTO test.t21 VALUES ('TRIG_TRUE');
+ELSE
+INSERT INTO test.t21 VALUES ('TRIG_FALSE');
+END IF;
+END|
+SET @VAR=0;
+CALL test.insert();
+SET @VAR=1;
+CALL test.insert();
+On master: Check the tables for correct data
+SELECT * FROM t20;
+a
+SP_FALSE
+SP_TRUE
+SELECT * FROM t21;
+a
+TRIG_FALSE
+TRIG_TRUE
+On slave: Check the tables for correct data and it matches master
+SELECT * FROM t20;
+a
+SP_FALSE
+SP_TRUE
+SELECT * FROM t21;
+a
+TRIG_FALSE
+TRIG_TRUE
+DROP TABLE t20;
+DROP TABLE t21;
+DROP PROCEDURE test.insert;
+DROP TABLE IF EXISTS t1;
+DROP FUNCTION IF EXISTS test.square;
+CREATE TABLE t1 (i INT);
+CREATE FUNCTION test.square() RETURNS INTEGER DETERMINISTIC RETURN (@var * @var);
+SET @var = 1;
+INSERT INTO t1 VALUES (square());
+SET @var = 2;
+INSERT INTO t1 VALUES (square());
+SET @var = 3;
+INSERT INTO t1 VALUES (square());
+SET @var = 4;
+INSERT INTO t1 VALUES (square());
+SET @var = 5;
+INSERT INTO t1 VALUES (square());
+On master: Retrieve the values from the table
+SELECT * FROM t1;
+i
+1
+4
+9
+16
+25
+On slave: Retrieve the values from the table and verify they are the same as on master
+SELECT * FROM t1;
+i
+1
+4
+9
+16
+25
+DROP TABLE t1;
+DROP FUNCTION test.square;
+DROP TABLE IF EXISTS t1;
+DROP FUNCTION IF EXISTS f1;
+DROP FUNCTION IF EXISTS f2;
+CREATE TABLE t1(a int);
+CREATE FUNCTION f1() returns int deterministic
+BEGIN
+return @a;
+END |
+CREATE FUNCTION f2() returns int deterministic
+BEGIN
+IF (@b > 0) then
+SET @c = (@a + @b);
+else
+SET @c = (@a - 1);
+END if;
+return @c;
+END |
+SET @a=500;
+INSERT INTO t1 values(f1());
+SET @b = 125;
+SET @c = 1;
+INSERT INTO t1 values(f2());
+On master: Retrieve the values from the table
+SELECT * from t1;
+a
+500
+625
+On slave: Check the tables for correct data and it matches master
+SELECT * from t1;
+a
+500
+625
+DROP TABLE t1;
+DROP FUNCTION f1;
+DROP FUNCTION f2;
+DROP TABLE IF EXISTS t1;
+DROP TABLE IF EXISTS t2;
+CREATE TABLE t1 (i int);
+CREATE TABLE t2 (k int);
+CREATE trigger t1_bi before INSERT on t1 for each row
+BEGIN
+INSERT INTO t2 values (@a);
+SET @a:=42;
+INSERT INTO t2 values (@a);
+END |
+SET @a:=100;
+INSERT INTO t1 values (5);
+On master: Check to see that data was inserted correctly in both tables
+SELECT * from t1;
+i
+5
+SELECT * from t2;
+k
+100
+42
+On slave: Check the tables for correct data and it matches master
+SELECT * from t1;
+i
+5
+SELECT * from t2;
+k
+100
+42
+End of 5.0 tests.
+DROP TABLE t1;
+DROP TABLE t2;
+DROP TABLE IF EXISTS t1;
+DROP FUNCTION IF EXISTS f1;
+DROP FUNCTION IF EXISTS f2;
+CREATE TABLE t1 (i INT);
+CREATE FUNCTION f1() RETURNS INT RETURN @a;
+CREATE FUNCTION f2() RETURNS INT
+BEGIN
+INSERT INTO t1 VALUES (10 + @a);
+RETURN 0;
+END|
+SET @a:=123;
+SELECT f1(), f2();
+f1()	f2()
+123	0
+On master: Check to see that data was inserted correctly 
+INSERT INTO t1 VALUES(f1());
+SELECT * FROM t1;
+i
+133
+123
+On slave: Check the table for correct data and it matches master
+SELECT * FROM t1;
+i
+133
+123
+DROP FUNCTION f1;
+DROP FUNCTION f2;
+DROP TABLE t1;
 stop slave;

mysql-test/t/rpl_user_variables.test

@@ -57,8 +57,305 @@ insert into t1 select * FROM (select @var1 union  select @var2) AS t2;
 drop table t1;
 save_master_pos;
 
-connection slave;
-sync_with_master;
+--echo End of 4.1 tests.
+
+# BUG#20141
+# The following tests ensure that if user-defined variables are used in SF/Triggers
+# that they are replicated correctly. These tests should be run in both SBR and RBR
+# modes.
+
+# This test uses a procedure that inserts data values based on the value of a 
+# user-defined variable. It also has a trigger that inserts data based on the
+# same variable. Successful test runs show that the @var is replicated 
+# properly and that the procedure and trigger insert the correct data on the
+# slave.
+#
+# The test of stored procedure was included for completeness. Replication of stored
+# procedures was not directly affected by BUG#20141.
+#
+# This test was constructed for BUG#20141
+
+--disable_warnings
+DROP TABLE IF EXISTS t20;
+DROP TABLE IF EXISTS t21;
+DROP PROCEDURE IF EXISTS test.insert;
+--enable_warnings
+
+CREATE TABLE t20 (a VARCHAR(20));
+CREATE TABLE t21 (a VARCHAR(20));
+DELIMITER |;
+
+# Create a procedure that uses the @var for flow control
+
+CREATE PROCEDURE test.insert()
+BEGIN
+  IF (@VAR)
+  THEN
+      INSERT INTO test.t20 VALUES ('SP_TRUE');
+  ELSE
+      INSERT INTO test.t20 VALUES ('SP_FALSE');
+  END IF;
+END|
+
+# Create a trigger that uses the @var for flow control
+
+CREATE TRIGGER test.insert_bi BEFORE INSERT
+    ON test.t20 FOR EACH ROW
+    BEGIN
+      IF (@VAR)
+      THEN
+        INSERT INTO test.t21 VALUES ('TRIG_TRUE');
+      ELSE
+        INSERT INTO test.t21 VALUES ('TRIG_FALSE');
+      END IF;
+    END|
+DELIMITER ;|
+
+sync_slave_with_master;
+connection master;
+
+# Set @var and call the procedure, repeat with different values
+
+SET @VAR=0;
+CALL test.insert();
+SET @VAR=1;
+CALL test.insert();
+
+--echo On master: Check the tables for correct data
+
+SELECT * FROM t20;
+SELECT * FROM t21;
+
+sync_slave_with_master;
+
+--echo On slave: Check the tables for correct data and it matches master
+
+SELECT * FROM t20;
+SELECT * FROM t21;
+connection master;
+
+# Cleanup
+
+DROP TABLE t20;
+DROP TABLE t21;
+DROP PROCEDURE test.insert;
+
+# This test uses a stored function that uses user-defined variables to return data
+# This test was constructed for BUG#20141
+
+--disable_warnings
+DROP TABLE IF EXISTS t1;
+DROP FUNCTION IF EXISTS test.square;
+--enable_warnings
+
+CREATE TABLE t1 (i INT);
+
+# Create function that returns a value from @var. In this case, the square function
+
+CREATE FUNCTION test.square() RETURNS INTEGER DETERMINISTIC RETURN (@var * @var);
+
+sync_slave_with_master;
+connection master;
+
+# Set the @var to different values and insert them into a table
+
+SET @var = 1;
+INSERT INTO t1 VALUES (square());
+SET @var = 2;
+INSERT INTO t1 VALUES (square());
+SET @var = 3;
+INSERT INTO t1 VALUES (square());
+SET @var = 4;
+INSERT INTO t1 VALUES (square());
+SET @var = 5;
+INSERT INTO t1 VALUES (square());
+
+--echo On master: Retrieve the values from the table
+
+SELECT * FROM t1;
+
+sync_slave_with_master;
+
+--echo On slave: Retrieve the values from the table and verify they are the same as on master
+
+SELECT * FROM t1;
+
+connection master;
+
+# Cleanup
+
+DROP TABLE t1;
+DROP FUNCTION test.square;
+
+# This test uses stored functions that uses user-defined variables to return data
+# based on the use of @vars inside a function body.
+# This test was constructed for BUG#14914
+
+--disable_warnings
+DROP TABLE IF EXISTS t1;
+DROP FUNCTION IF EXISTS f1;
+DROP FUNCTION IF EXISTS f2;
+--enable_warnings
+
+CREATE TABLE t1(a int);
+DELIMITER |;
+
+# Create a function that simply returns the value of an @var.
+# Create a function that uses an @var for flow control, creates and uses another
+# @var and sets its value to a value based on another @var.
+
+CREATE FUNCTION f1() returns int deterministic
+BEGIN
+  return @a;
+END |
+
+CREATE FUNCTION f2() returns int deterministic
+BEGIN
+  IF (@b > 0) then
+    SET @c = (@a + @b);
+  else
+    SET @c = (@a - 1);
+  END if;
+  return @c;
+END |
+DELIMITER ;|
+
+sync_slave_with_master;
+connection master;
+
+# Set an @var to a value and insert data into a table using the first function.
+# Set two more @vars to some values and insert data into a table using the second function.
+
+SET @a=500;
+INSERT INTO t1 values(f1());
+SET @b = 125;
+SET @c = 1;
+INSERT INTO t1 values(f2());
+
+sync_slave_with_master;
+
+--echo On master: Retrieve the values from the table
+
+SELECT * from t1;
+
+--echo On slave: Check the tables for correct data and it matches master
+
+SELECT * from t1;
+
+connection master;
+
+# Cleanup
+
+DROP TABLE t1;
+DROP FUNCTION f1;
+DROP FUNCTION f2;
+
+# This test uses a function that changes a user-defined variable in its body. This test
+# will ensure the @vars are replicated when needed and not interrupt the normal execution
+# of the function on the slave. This also applies to triggers.
+#
+# This test was constructed for BUG#25167
+
+--disable_warnings
+DROP TABLE IF EXISTS t1;
+DROP TABLE IF EXISTS t2;
+--enable_warnings
+CREATE TABLE t1 (i int);
+CREATE TABLE t2 (k int);
+DELIMITER |;
+
+# Create a trigger that inserts data into another table, changes the @var then inserts 
+# another row with the modified value.
+
+CREATE trigger t1_bi before INSERT on t1 for each row
+BEGIN
+  INSERT INTO t2 values (@a);
+  SET @a:=42;
+  INSERT INTO t2 values (@a);
+END |
+DELIMITER ;|
+
+sync_slave_with_master;
+connection master;
+
+# Set the @var to a value then insert data into first table.
+
+SET @a:=100;
+INSERT INTO t1 values (5);
+
+--echo On master: Check to see that data was inserted correctly in both tables
+
+SELECT * from t1;
+SELECT * from t2;
+
+sync_slave_with_master;
+
+--echo On slave: Check the tables for correct data and it matches master
+
+SELECT * from t1;
+SELECT * from t2;
+
+connection master;
+
+--echo End of 5.0 tests.
+
+# Cleanup
+
+DROP TABLE t1;
+DROP TABLE t2;
+
+# This test uses a stored function that uses user-defined variables to return data
+# The test ensures the value of the user-defined variable is replicated correctly
+# and in the correct order of assignment.
+# This test was constructed for BUG#20141
+
+--disable_warnings
+DROP TABLE IF EXISTS t1;
+DROP FUNCTION IF EXISTS f1;
+DROP FUNCTION IF EXISTS f2;
+--enable_warnings
+
+CREATE TABLE t1 (i INT);
+
+# Create two functions. One simply returns the user-defined variable. The other
+# returns a value based on the user-defined variable.
+
+CREATE FUNCTION f1() RETURNS INT RETURN @a;
+DELIMITER |;
+CREATE FUNCTION f2() RETURNS INT
+BEGIN
+  INSERT INTO t1 VALUES (10 + @a);
+  RETURN 0;
+END|
+DELIMITER ;|
+
+sync_slave_with_master;
+connection master;
+
+# Set the variable and execute the functions.
+
+SET @a:=123;
+SELECT f1(), f2();
+
+--echo On master: Check to see that data was inserted correctly 
+
+INSERT INTO t1 VALUES(f1());
+SELECT * FROM t1;
+
+sync_slave_with_master;
+
+--echo On slave: Check the table for correct data and it matches master
+
+SELECT * FROM t1;
+
+connection master;
+
+# Cleanup
+
+DROP FUNCTION f1;
+DROP FUNCTION f2;
+DROP TABLE t1;
+
+sync_slave_with_master;
 stop slave;
 
-# End of 4.1 tests

sql/item_func.cc

@@ -4223,7 +4223,14 @@ int get_var_with_binlog(THD *thd, enum_sql_command sql_command,
   user_var_entry *var_entry;
   var_entry= get_variable(&thd->user_vars, name, 0);
 
-  if (!(opt_bin_log && is_update_query(sql_command)))
+  /*
+    Any reference to user-defined variable which is done from stored
+    function or trigger affects their execution and the execution of the
+    calling statement. We must log all such variables even if they are 
+    not involved in table-updating statements.
+  */
+  if (!(opt_bin_log && 
+       (is_update_query(sql_command) || thd->in_sub_stmt)))
   {
     *out_entry= var_entry;
     return 0;

sql/log.cc

@@ -1577,13 +1577,13 @@ bool MYSQL_LOG::flush_and_sync()
   return err;
 }
 
-void MYSQL_LOG::start_union_events(THD *thd)
+void MYSQL_LOG::start_union_events(THD *thd, query_id_t query_id_param)
 {
   DBUG_ASSERT(!thd->binlog_evt_union.do_union);
   thd->binlog_evt_union.do_union= TRUE;
   thd->binlog_evt_union.unioned_events= FALSE;
   thd->binlog_evt_union.unioned_events_trans= FALSE;
-  thd->binlog_evt_union.first_query_id= thd->query_id;
+  thd->binlog_evt_union.first_query_id= query_id_param;
 }
 
 void MYSQL_LOG::stop_union_events(THD *thd)

sql/sp_head.cc

@@ -1464,8 +1464,24 @@ sp_head::execute_function(THD *thd, Item **argp, uint argcount,
   binlog_save_options= thd->options;
   if (need_binlog_call)
   {
+    query_id_t q;
     reset_dynamic(&thd->user_var_events);
-    mysql_bin_log.start_union_events(thd);
+    /*
+      In case of artificially constructed events for function calls
+      we have separate union for each such event and hence can't use
+      query_id of real calling statement as the start of all these
+      unions (this will break logic of replication of user-defined
+      variables). So we use artifical value which is guaranteed to
+      be greater than all query_id's of all statements belonging
+      to previous events/unions.
+      Possible alternative to this is logging of all function invocations
+      as one select and not resetting THD::user_var_events before
+      each invocation.
+    */
+    VOID(pthread_mutex_lock(&LOCK_thread_count));
+    q= ::query_id;
+    VOID(pthread_mutex_unlock(&LOCK_thread_count));
+    mysql_bin_log.start_union_events(thd, q + 1);
   }
 
   /*

sql/sql_class.cc

@@ -2051,6 +2051,10 @@ void THD::reset_sub_statement_state(Sub_statement_state *backup,
 
   if (!lex->requires_prelocking() || is_update_query(lex->sql_command))
     options&= ~OPTION_BIN_LOG;
+
+  if ((backup->options & OPTION_BIN_LOG) && is_update_query(lex->sql_command))
+    mysql_bin_log.start_union_events(this, this->query_id);
+
   /* Disable result sets */
   client_capabilities &= ~CLIENT_MULTI_RESULTS;
   in_sub_stmt|= new_state;
@@ -2097,6 +2101,9 @@ void THD::restore_sub_statement_state(Sub_statement_state *backup)
   sent_row_count=   backup->sent_row_count;
   client_capabilities= backup->client_capabilities;
 
+  if ((options & OPTION_BIN_LOG) && is_update_query(lex->sql_command))
+    mysql_bin_log.stop_union_events(this);
+
   /*
     The following is added to the old values as we are interested in the
     total complexity of the query

sql/sql_class.h

@@ -311,7 +311,7 @@ public:
   bool write(Log_event* event_info); // binary log write
   bool write(THD *thd, IO_CACHE *cache, Log_event *commit_event);
 
-  void start_union_events(THD *thd);
+  void start_union_events(THD *thd, query_id_t query_id_param);
   void stop_union_events(THD *thd);
   bool is_query_in_union(THD *thd, query_id_t query_id_param);